Publication

Energy dissipation in concentrated monodisperse colloidal suspensions of silica particles in polyethylene glycol

Publications associées (39)

Self-assembled nanostructures prepared by colloidal chemistry

The use of nanomaterials has been shown to be promising in potential applications such as magnetic storage devices, nano-optical devices and sensors, amongst others. Such applications require the disposition of nanoparticles, of a wide variety of materials ...

EPFL2006

Highly branched polymer/montmorillonite clay nanocomposites

Marlene Rodlert

The aim of this thesis has been to assess the potential of branched polymers as novel exfoliants for layered silicates and their application in polyurethanes. Three different types of –OH functional branched polymers have been studied: dendrimers, hyperbra ...

EPFL2005

Rheological behavior of hyperbranched polymer/montmorillonite clay nanocomposites

Yves Leterrier, John Christopher Plummer, Marlene Rodlert

The equilibrium rheological properties of a range of isotropic exfoliated and intercalated hyperbranched polymer (HBP)/montmorillonite (MMT) clay nanocomposites have been investigated using low strain oscillating shear measurements at temperatures above th ...

2004

Acoustic and visual study of bubble formation processes in bubble columns staged with fibrous catalytic layers

Albert Renken, Lioubov Kiwi, Volker Höller

High-speed images of bubbly flow coupled with simultaneous passive acoustic measurements were carried out in a bubble column staged with structured fibrous catalysts. Local observations made with a high-speed camera system allow a detailed understanding of ...

2003

A novel CMOS SOI unbalanced Mach-Zehnder interferometer: from design and simulations to fabrication and characterization

Mihai Adrian Ionescu, Luc Thévenaz, Philippe Renaud, Michel Declercq, Philippe Robert, Cyrille Hibert, Philippe Flückiger, Georges-André Racine

This paper reports on a novel, simple yet reliable, unbalanced SOI Mach-Zehnder (M-Z) interferometer architecture based on 1.2 μm CMOS process and adapted post-processing for the waveguide sidewalls. The fabricated electro-optical device is based on multip ...

2001

Cartographie et spectroscopie des propriétés mécaniques à l'échelle du nanomètre par spectrométrie acoustique locale à fréquence variable

This work aims at completing the development of local mechanical spectroscopy as initiated by F. Oulevey during his thesis. More precisely, the measurement of the amplitude and phase lag of the strain as a function of the applied stress frequency bas to be ...

EPFL2000

Discrimination between bulk and interface scenarios for the suppression of the switchable polarization (fatigue) in Pb(Zr,Ti)O-3 thin films capacitors with Pt electrodes

Nava Setter, Alexander Tagantsev, Enrico Colla

A simple and reliable method which allows one to distinguish between the two major microscopic scenarios for the suppression of the switching polarization (P-r(s)), i.e., pinning of ferroelectric domain walls (DWs) through the Pb(Zr,Ti)O-3 film (PZT) (bulk ...

1998

Sheath impedance effects in very high frequency plasma experiments

Christoph Hollenstein, Stephan Brunner, Alan Howling

The frequency dependence (13.56-70 MHz) of the ion energy distribution at the ground electrode was measured by mass spectrometry in a symmetrical capacitive impedance at very high frequency allows high levels of plasma power and substrate ion flux while ma ...

1996

Theory of Plasma-Heating by Low-Frequency Waves - Magnetic Pumping and Alfven Resonance Heating

Kurt Appert

The present status of the theory of plasma heating by low frequency waves is reviewed from a unified point of view based on the concept of the dielectric tensor operator. ...

1991

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